I think when it comes to the high heel height of what is acceptable to wear or not, I get the win for being the most dumb!
When I first met my wife, and found out she LOVED high heels, I wanted to get some for her as a gift. At the time, about 2012'ish, there were far more choices in stores, but the clerk working there was not a whole lot of help. So when a woman was there buying shoes I asked her what would be an appropriate pair for my wife to wear to church. She helped me pick out a pair and said something I will never forget, "just remember, for heels at church you never want to go over 3.5 inches (9 CM)".
My wife does have a few 10 CM's, and a very few 12 cm's, but when I buy her shoes I never go over 9 cm so she can wear them on dates as well as to church. But yes... my height standard for church was set by some literal random stranger in a store 14 years ago!
Yep; that is dumb!
(Edited after I found a picture of her in those first heels I ever bought for her. The lady in the post above helped me pick these shoes out. Just keep in mind this was in 2012).